Etanol. O destruidor.

Summary

Video discusses direct injection engine issues when using pure ethanol fuel, including corrosion and leaks in fuel system. Manufacturers recommend alternating ethanol and gasoline to mitigate these problems.

Takeaways

• 😀 The video discusses using ethanol as fuel, especially in direct injection engines.
• 😕 Ethanol can cause issues like injector problems more often than gasoline.
• 🤔 Vehicle manufacturers recommend using at least 1 gas tank for every 10 ethanol tanks.
• 😮 Ethanol corrodes metal parts like valves more than gasoline. Parts need special treatments.
• 🧐 The assistant checked a direct injection car spraying a lot of fuel with the engine off.
• 👍 They will replace the faulty injectors with new genuine Bosch ones.
• 🔍 The manual recommends 1 gas tank for every 10k km when using ethanol to avoid issues.
• 😃 Ethanol is a good Brazilian fuel that emits fewer pollutants but brings problems.
• ❌ He disagrees that saying ethanol doesn't damage injection systems is a myth.
• 💡 He has 20 years of experience showing ethanol requires adapted parts to avoid problems.

Q & A

What is the video about?

The video is about using ethanol as fuel, especially in cars with direct injection engines. It discusses the problems that can occur from using ethanol and recommendations for maintaining the engine properly.

Why can using ethanol cause problems in direct injection engines?

Ethanol can be more corrosive and cause damage to components not designed specifically for ethanol, like fuel injectors and high pressure fuel pumps. It can also cause leaks in the high pressure system.

What symptoms may indicate ethanol fuel problems?

Hard starting, loss of performance, fuel leaks, and contamination of the engine oil with fuel are common symptoms of ethanol fuel system problems.

How can drivers prevent ethanol fuel problems?

Use gasoline occasionally, at least 1 tank for every 10,000 km driven. This helps clean out any buildup from ethanol. Follow manufacturer recommendations for fuel and maintenance.

Why does the high pressure leak down when the engine is off?

If there are leaks in the high pressure fuel system, either from damaged injectors or fuel pump, the pressure will rapidly decrease instead of holding when the engine is off.

How can ethanol cause engine damage?

Leaking injectors can fill the cylinder with too much fuel, causing hydraulic lock which can bend or break engine components.

What special treatments are done for ethanol fuels?

Spark plugs, fuel pumps, fuel level sensors, fuel injectors and other components are treated with special coatings to resist corrosion from ethanol fuels.

What does the owner's manual say about ethanol fuels?

It recommends filling up with at least 1 tank of gasoline for every 10,000 km driven when using ethanol, to help maintain the engine.

How can mechanics diagnose ethanol fuel problems?

Using a borescope to look at the injectors while the engine is off, monitoring fuel pressure decay when the engine is off, and noticing symptoms while driving can indicate ethanol fuel system issues.

Why does the mechanic recommend replacing all the injectors at once?

Once one injector is damaged from ethanol, the others are also at risk of failing soon. It prevents repeat repairs to change them all at once.